Case-lock.



B. S. BOYER.

, GASB LOCK. APPLIUATION FILED mm: 20,1906.

. Patented'Apr.13,1909.

2 SHEETS-SHEET 1.

E,S .ROYER. IOASE LOCK.

APPLICATION, FILED JUN 20, 1906.

Elwuentoz 2 SHEETS-SHEET 2.

"Patented Apr. 13-, 1909.

nu cm, wnxumcmu. o. c.

ELLlS S. ROYEP, Ol

LilAROli, MISSOURL Specification of Letters Eatent.

Patented April 13, 1909.

Application filed. June 20, 1906. Serial No. 822,604.

march, in the county of St. Francois, State of Missouri, have invented certain new and nset'nl rinproremcr s in Case-Locks; and i do hereby declare the following to be a full, clear, and exact description of the inren lion, such as will. enable others skilled in the art to which it appertains to make and use the same.

This invention relates to watch case locks, and has for its object to provide a device of this class which will securely hold the front and baclt or' a watch against removal unless released by a proper sin of key.

A further objector the invention is to provide a lock of this character which will automatically spring into place and lock without the necessity of the insertion of a key.

ll ith the above and other objects in View. the invention consists in the construction, combination and arrangement of parts, all as hereinafter fully described, and pointed out in the accompanying? drawings, in riiCli- V Figure l. an edge view oi a watch casing showing the device applied thereto. 2 a similar yiew showing the casing broken away. Fig. is a detail sectional Yiew on the line 3-3 of Fig. 2. Fig. l is a View similar to Fig. 2. showing a slightly modified form or look.

Referring 11101; specifically to the drawings. the numeral 5 denotes the case center of a watch case, 6 the front bezel thereof. and T tl e lock. At any desired point in its periphery the case center 5 is recessed. as at S. and secured in the recess by means ot screws 9 is a plate 10, which is arcuate in form to conform to the cuiwature of the case center Pii'oted. as at 11. to the plate 10 is a pair of locking bolts 12, which include each portions 13 and ll, which extend at an obtuse angle to each other, as shown in Fig. 2 of the drawings. The locking bolts ience lie at acrte angles with respect to each oth i, and the portions 13 each have their ends ti rned laterally, as at 15, for normal engagement through openings 16 in the walls of the recess formed in the case center of the watch and into notches termed in the ede s of the front and back of the watch The bolts are normally held in this position by means of a sprin as will be presently explained, and in order to permit the neat and back of the case to be screwed into place and automatically loch, one wall of the notch 17 in the front and back is bcreed. as at l8, in a direction opposite to the direction rotation of the front and back of too case when screwing the same into place. The spring; mentioned above is in the form ot a bowed leaf spring 19, rhich has its ends turned inwardly toward each other, as at 20. and engaged with lugs 21 termed at the ends of the bolts 12 opposite their laterally bent ends 15, the tendency of the spring being to normally more the said ends of the bolts toward each other and force their opposite ends through the openings 16 and into the notches 17. ii hc hole is formed in the said case center for the engagement theretln'on g h ot a key which has oppositely extending wards 2i which serve to spread the ends ll of the bolts 12, when the hey is turned. thereby releasing the bolts from engagement with the front and bacl: of the case. lhe key-hole 22 is pr terably formed through a barrel 2-3, which is formed integral with the case :enter of the casing and is provided with a screw dost-cap 26. which prevents entrance of dust into-me casing.

in the form of my loch shown in Fig. i. there is shown a bolt 27. which pivoted. as at 2 at one of its ends. and has its oppo- Ic end turned. as at 29, for engagement through the case center and into the reformed in the front and back of the fog, a second bolt 30 is pivoted at or adjacent its middle to the plate 10 and is connected at its end opposite its laterally turned end to the bolt 27 by means or a link 31. tloringzs 32, wnich are secured at one of their ends to the plate 10 bear with their free ends against the bolts 2-? and 30. and normally hold the same in locking position. The key used with this form of lock but one ward which engages the bolt 30 and serves to withdraw the said bolt and the bolt 27 from locking engagement with the front and back of the casing.

lVhat is claimed, is l ranged to be simultaneously operated by a 10 1. In a Watch, the combination With a single key. case center and a screw bezel, of a key oper- In testimony whereof, I affix my signature, ated bolt for holding the bezel against re I in presence of two Witnesses. moval.

2. In a Watch, the combination With a ELLIb BOYLE case center and front and back screw bezels, Witnesses: of bolts supported upon the case center for S. D. BRYAN,

holding the bezels against removal and ar- J. L.EATO1\'. 

